A snake is a long, legless reptile that belongs to the suborder Serpentes. They are found in a variety of habitats, including forests, deserts, and oceans. Snakes have flexible jaws that allow them to swallow prey whole, and they primarily feed on small animals like rodents, birds, and insects. Most snakes are covered in scales, which help protect their bodies and retain moisture. They are cold-blooded, meaning their body temperature is regulated by their environment. Some snakes, like the king cobra and rattlesnake, are venomous, using their venom to subdue prey or defend themselves.